Spin-wave filters based on thin Y3Fe5O12 films on Gd3Ga5O12 and Si substrates for microwave applications

Spin-wave bandpass filters with small sizes on the basis of thin Y 3 Fe 5 O 12 [yttrium-iron garnet (YIG)] films on Gd 3 Ga 5 O 12 [gadolinium-gallium garnet (GGG)] and SiO 2 / Si substrates have been constructed. A thin YIG film with a thickness of 0.8 μ m on SiO 2 / Si substrates has been grown by...

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Bibliographic Details
Published in:Journal of applied physics 2020-05, Vol.127 (18)
Main Authors: Lutsev, L. V., Dubovoy, V. A., Stognij, A. I., Novitskii, N. N., Mozharov, A. M., Mukhin, I. S., Ketsko, V. A.
Format: Article
Language:English
Subjects:
Applied physics
Bandpass filters
Electromagnetic wave filters
Gadolinium
Gadolinium-gallium garnet
Ion beams
Magnons
Narrowband
Silicon dioxide
Silicon substrates
Thickness
Thin films
Wave propagation
Yttrium
Yttrium-iron garnet
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Summary:Spin-wave bandpass filters with small sizes on the basis of thin Y 3 Fe 5 O 12 [yttrium-iron garnet (YIG)] films on Gd 3 Ga 5 O 12 [gadolinium-gallium garnet (GGG)] and SiO 2 / Si substrates have been constructed. A thin YIG film with a thickness of 0.8 μ m on SiO 2 / Si substrates has been grown by the ion-beam sputtering. It is found that the coplanar antenna structure can be successfully used to construct tunable small-sized narrowband bandpass filters based on spin waves. The filter transmission characteristic has a nonreciprocity when the direction of energy propagation changes. Spin-wave filter characteristics are analyzed using the transmission-matrix formalism.
ISSN:0021-8979
1089-7550
DOI:10.1063/5.0007338